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R=srednica podstawy
h=wysokosc
r=promień
z własnosci kata 60 w trójkacie prostokatnym wynika,ze R=1/2d=2
h=R√3=2√3
lub;
cos 60=R/d
1/2=R/4
R=2 r=1
h=√[4²-2²]=√12=2√3
Pp=πr²=π*1²=π
v=Pph=π*2√3=2π√3 j.³